Boiler



(N0 Model.)

J. S. WILLIAMS.

BOILER.

Patented Oct.

2 Sheets--Sheet 1.

N. PETERS, Pmxmmbagnphr. wnhingmn. n. C.

(No Model.) 2 Sheets-Sheet 2.

J. S. WILLIAMS.

BOILBR.

No. 414,101 Patented Oct. 29, 1889.

N4 PETERS, Phulo-Lilnempher. wnhmgmn. D. C

UNITED STATES PATENT OFFICE.

JACOB S. IVILLIAMS, OF ST. LOUIS, MISSOURI.

BOILER.

SPECIFICATION forming part of Letters Patent No. 414,101, dated October 29, 1889.

Application filed April 24,

To all 1071.071?, it 71mg/ concern.-

Be it known that I, JACOB S. lVILLIAMs, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This improvement relates toa stove or furnace adapted to heat air or water.

The improvement is shown as applied to a stove or furnace in which the air is supplied with proportional quantities of air above and below the fire, as described, shown, and claimed in Letters Patent No. 392,899, dated November 13, 1888.

FigureI is a vertical section at II, Fig. III. Fig. II is a vertical section at II II, Fig. III. Fig. III is a horizont-al section at III III, Fig. I. Fig. IV is a horizontal section at IV 1V, Fig. I. Fig. V is a horizontal section at V V, Fig. I. Fig. VI is a horizontal section at VI VI, Fig. I. VII is an enlarged detail section at VII VII, Fig. IV.

1 is a base, having a water-chamber 2, provided with induction pipe or pipes 3, through which water is return ed to it from the heaters in the rooms. The water-chamber 2 has at the Vtop a number of openings communicating with wateichambers 4 and 5 in sectional castings G and 7. These castings are in the form of sections of a cylinder, and when placed edge to edge form annular Walls 8 and 9, which are concentric with one another and with the outer wall or case 10.

11 is an annular casting or cap extending to the top of the fuel-magazine and having an annular water-chamber 12, with orifices 13 in the bottom communicating with the chambers 4 and 5s 14 are eductionpipes, (or pipe,) through which the water or steam leaves the chamber 12, and through which it flows to the heaters in the rooms.

The chambered sections or castings G and 7 are connected together and with the base 1 and cap 11 by water-tight joints. The preferred construction of joint between the sections or castings 5 and 6 consists in transverse ribs 15, that are cast on the edges of the sections and overlap each other, but which are not in Contact with each other.

1888. Serial No. 271,722i (No model.)

At 1G is shown cement of any suitable description, which fills the space between the edges of the sections.

At 17 are shown tierods, which extend from the base to the cap through the apertures or orifices, chambers 4 and 5, and apertures or orifices 13.

The fire-pot 18 is supported by the wall 9.

19 is the ash-pit.

2O is the combustionlchamber, from which passages extend through the wall 9 for the escape of the products of combustion from the chamber 2O to an annular chamber 21, that is betwecnthe Walls 8 and 9. The products of combustion pass downward in the chamber 21 to the outlets 22, leading to the chimney-flue 23.

24 are passages leading from the top of the annular chamber 21 through the cap 11, and 25 are covers to the upper ends of these passages.

26 is a passage leading from the outside of the stove or furnace to the ash-pit to supply air beneath the fire.

27 is a damper controlling the entrance of air into the passage 2G.

.2S is an air-passage leading from outside the stove or furnace to an annular chamber 29, surrounding the inner wall 30 of the fuelmagazine 31. The air-passage 28 connects with the lower part of the annular chamber 29, and as the lower end of the chamber is closed the air passes upward in the chamber to orifices 32, made through thc outer wall 33 of the chamber and leading to the upper part of a similar annular' chamber 34,surround ing the chamber 29. The outer chamber 34 is open at its bottom, preferably having a number of orifices 35, (see Figs. III and IV,) so that the air impinges on the top of the burning fuel in the iire-pot. The entrance of air into the passage 28 is controlled by a damper 3G.

The magazine is fed through a mouth 44, closed by a door 45.

46 is a flue or pipe, through which the pro ducts of combustion may be allowed to escape when first lighting the fire.

47 is the door to the ash-pit.

I claim as my invention-- 1. A. boiler having two annular walls composed of hollow sections, water chambers IOO above and below communicating with the chambers in thevsections, and an annular flue between the walls for the passage of the products of combustion.

2. The combination,in a boiler, of two concentric walls containing water-chambers, in connection with water-spaces above and below, and an annular descending flue between the walls, substantially as set forth.

3. The combination, in aboiler, of two concentric annular walls, each composed of similar hollow sections, the sections having parallel curved inner and outer sides and iitted together at the edges with vertical joints, an annular flue between the two walls for the passage of the products of combustion, and water-chambers above and below in communication with the chambers within the sectionsA `of the inner flue being in communication with the combustion-chamber, and the ilues being in communication with each other at top, and wat'er-chambers above and below in communication withtlie chambers of vthe hollow sections, all substantially as set forth.

JACOB S. WILLIAMS. In presence ofm SAML. KNIGHT, Enwn. S. KNIGHT.'A 

